.beautifulScroll::-webkit-scrollbar {
    width: 5px;
    height: 5px;
    background: #999999;
    border-radius: 5px;
}

.beautifulScroll::-webkit-scrollbar-track {
    background: #F5F5F5;
    border-radius: 5px;
}

.beautifulScroll::-webkit-scrollbar-thumb {
    border-radius: 5px;
    background: #999999;
}

.darkScorll::-webkit-scrollbar {
    width: 5px;
    height: 5px;
    background: #CCCCCC;
    border-radius: 5px;
}

.darkScorll::-webkit-scrollbar-track {
    background: #CCCCCC;
    border-radius: 5px;
}

.darkScorll::-webkit-scrollbar-thumb {
    border-radius: 5px;
    background: #999999;
}

.hiddenScroll::-webkit-scrollbar-thumb {
    display: none !important;
}

.hiddenScroll::-webkit-scrollbar {
    display: none !important;
}

.hiddenScroll::-webkit-scrollbar-track {
    display: none !important;
}

.div-top {
    color: rgb(32, 29, 29);
    border-bottom: 1px solid rgba(32, 30, 30, 0.432);
    height: 70px;
    font-size: 15px;
    padding-top: 30px;
    padding-left: 50px;
    margin-bottom: 20px;
}

.avataruploads {
    height: 150px;
    width: 150px;
    border: 1px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    line-height: 150px;
    text-align: center;
    font-size: 22px;
    position: relative;
}

.avataruploads:hover {
    border: 1px solid #5cb6ff;
    color: #5cb6ff;
}

.avatarupcover {
    position: absolute;
    left: 0;
    top: 0;
    height: 150px;
    width: 150px;
    z-index: 1;
    cursor: pointer;
    line-height: 150px;
    text-align: center;
    font-size: 22px;
}

.avatarupcover:hover {
    color: #5cb6ff;
}

.avataruploads:hover .avatarupcover-change {
    display: block;
}

.avataruploads img {
    height: 150px;
    width: 150px;
}

.imagePreview:hover {
    cursor: pointer;
}

.eltreeBox {
    width: 100%;
    height: auto;
    max-height: 400px;
    overflow-y: auto;
}

.search_label {
    margin: 0 0 0 20px;
    display: inline-block;
}

.user_lable {
    width: 100%;
    height: 40px;
    text-align: center;
    background: rgba(49, 188, 122, 0.9);
    color: #FFFFFF;
    line-height: 40px;
}

.user_left {
    width: 100%;
    height: calc(100vh - 125px);
    min-height: 400px;
    border: 1px solid #cccccc;
    margin: 15px;
    overflow-y: auto;
}

.user_leftitem {
    width: 90%;
    margin: 5px auto;
    height: 35px;
    line-height: 35px;
    font-size: 15px;
    text-indent: 1em;
    cursor: pointer;
    border-radius: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user_leftitem.active,
.user_leftitem:hover {
    background: #31bc7a;
    color: #FFFFFF;
}

.user_right {
    width: calc(100% - 30px);
    height: calc(100vh - 125px);
    min-height: 400px;
    border: 1px solid #cccccc;
    margin: 15px;
    overflow-y: auto;
}

.user_alert {
    width: 100%;
    height: 40px;
    text-align: center;
    background: #FF4D51;
    color: #FFFFFF;
    line-height: 40px;
}

.mini_dialog {
    .el-dialog__body {
        padding: 15px 20px;
    }
}

.topic_question {
    min-height: 40px;
    line-height: 40px;
    font-size: 16px;
    font-weight: bold;
    position: relative;
    box-sizing: border-box;
    padding: 0 120px 0 0;
    color: #000000;
}

.topic_selection {
    width: 100%;
    height: auto;
    line-height: 30px;
    font-size: 14px;
}

.topic_selectionit {
    box-sizing: border-box;
    padding: 0 0 0 30px;
    position: relative;
}

.topic_question p,
.topic_question div,
.topic_answer p,
.topic_answer div,
.topic_selectionit p,
.topic_selectionit div {
    display: inline-block !important;
    margin: 0;
}

.topic_selectionitall {
    padding: 0 0 0 0;
}

.topic_answermr {
    margin: 15px 0 0 0;
}

.topic_answer {
    height: auto;
    line-height: 26px;
    font-size: 14px;
    padding: 0 0 0 10px;
}

.topic_des {
    height: auto;
    line-height: 26px;
    font-size: 18px;
    margin: 10px 0;
}

.topicinfo {
    box-sizing: border-box;
    padding: 20px;
}

.small_input .ql-editor {
    height: auto;
    min-height: 100px;
    max-height: 200px;
}

.small_input .el-form-item {
    margin: 0 0 20px 0;
    position: relative;
}

.small_inputbtn {
    box-sizing: border-box;
    padding: 20px;
}

.small_input .el-tabs__item {
    height: 36px !important;
    line-height: 36px !important;
}

.mainColor {
    color: #1482F0;
}

.right_name {
    height: 40px;
    float: right;
    line-height: 40px;
    margin: 0 15px 0 0;
}

.menuinfo {
    box-sizing: border-box;
    padding: 20px;
    width: 100%;
    float: left;
}

.menulist_cont {
    width: 400px;
    float: right;
}

.menuinfo_list {
    box-sizing: border-box;
    width: 390px;
    margin: 20px 20px 15px 0;
    float: left;
    border: 1px solid #E5E5E0;
    min-height: 100px;
    padding: 0 0 25px 0;
}

.topform_cont {
    width: calc(100% - 400px);
    float: left;
}

.topicinfo_top {
    padding: 20px 20px 0;
    box-sizing: border-box;
    border-bottom: 1px solid #E4E4E4;
}

.menuinfo_top {
    box-sizing: border-box;
    padding: 0 20px;
    height: 40px;
    line-height: 40px;
    border-bottom: 1px solid #E4E4E4;
    font-weight: bold;

    span {
        float: right;
    }
}

.menuinfo_info {
    width: 100%;
    box-sizing: border-box;
    padding: 15px 15px 0 15px;
    height: auto;
    max-height: 500px;
    overflow-y: auto;
}

.menuinfo_info::-webkit-scrollbar {
    width: 5px;
    height: 5px;
    background: #999999;
    border-radius: 5px;
}

.menuinfo_info::-webkit-scrollbar-track {
    background: #F5F5F5;
    border-radius: 5px;
}

.menuinfo_info::-webkit-scrollbar-thumb {
    border-radius: 5px;
    background: #999999;
}

.menuinfo_infoname {
    height: 30px;
    line-height: 30px;
    font-size: 15px;
    margin: 0 0 15px 0;
}

.question_answer {
    height: 40px;
    width: 40px;
    background: #FFFFFF;
    margin: 0 18px 10px 0;
    float: left;
    cursor: pointer;
    text-align: center;
    line-height: 40px;
    text-align: center;
    box-sizing: border-box;
    border: 1px solid #E5E5E0;
    position: relative;
}

.question_answer.over {
    background: #409EFF;
    color: #FFFFFF;
}

.question_answer.doing {
    line-height: 38px;
    border: 1px solid #409EFF;
}

.question_delete {
    position: absolute;
    right: -8px;
    top: -8px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #FF0000;
    color: #FFFFFF;
    cursor: pointer;
    line-height: 16px;
    text-align: center;
    font-size: 12px;
    border: 1px solid #FF0000;
}

.question_delete:hover {
    border: 1px solid #FFFFFF;
}

.menuinfo_botttom {
    box-sizing: border-box;
    padding: 20px 20px 0 20px;
    width: 100%;
    float: left;
}

.menulist_conttop {
    height: 79px;
    box-sizing: border-box;
    padding: 20px 20px 0 0;
    text-align: right;
    border-bottom: 1px solid #E4E4E4;
}

.simulation_cont {
    box-sizing: border-box;
    padding: 15px;
}

.simulation_all {
    font-size: 19px;
    font-weight: bold;
}

.simulation_info {
    margin: 15px 0;
}

.top_info {
    line-height: 45px;
    padding: 20px;
    box-sizing: border-box;
    border-bottom: 1px solid #CCCCCC;
}

.info_label {
    margin: 0 0 0 35px;
    display: inline-block;
}

.tip_btn {
    height: 36px;
    width: 36px;
    box-sizing: border-box;
    border-radius: 50%;
    text-align: center;
    line-height: 36px;
    font-size: 36px;
    cursor: pointer;
    margin: 0 10px;
    display: inline-block;
    color: #E6A23C;
    overflow: hidden;
    float: right;
}

.editor_box>p {
    margin: 0;
    //  display: inline-block;
}

.editor_box img {
    max-width: 100%;
}

.list_question span p,
.list_question span div {
    display: inline-block !important;
    margin: 0;
}



.pointer {
    cursor: pointer;
}

.correct_complain .el-dialog__body {
    padding: 10px 20px;
}

.textbook_box {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    box-sizing: border-box;
    padding: 22px 24px;
    background: #F9F9F9;

}

.textbook_info {
    height: calc(100% - 60px);
    margin: 2px 0 0 0;
    border-top: 1px solid #cccccc;
    box-sizing: border-box;
}

.textbook_info_in {
    width: 100%;
    height: calc(100vh - 165px);
    box-sizing: border-box;
    border-right: 1px solid #CCCCCC;
}

.textbook_info_select {
    width: 100%;
    height: 490px;
    box-sizing: border-box;
}

.textbook_cont_select {
    height: calc(100% - 50px);
    width: 100%;
    overflow: hidden;
    box-sizing: border-box;
    padding: 14px 14px 0;
}

.textbook_cont_select.list {
    box-sizing: border-box;
    padding: 10px;
    overflow-y: auto;
}

.textbook_info_selectsmall {
    height: 105px;
    border-bottom: 1px solid #CCCCCC;
    box-sizing: border-box;
    background: #FFFFFF;
    border-radius: 6px 6px 6px 6px;
    border: 1px solid rgba(132, 157, 189, 0.5);
    margin: 0 0 15px;
}

.textbook_info_selectsection {
    height: calc(100% - 130px);
    border-bottom: 1px solid #CCCCCC;
    box-sizing: border-box;
    background: #FFFFFF;
    border-radius: 6px 6px 6px 6px;
    border: 1px solid rgba(132, 157, 189, 0.5);
}

.textbook_cont_section {
    width: 100%;
    height: 40px;
    box-sizing: border-box;
    width: 100%;
    height: 44px;
    background: #F9F9F9;
    border-radius: 6px 6px 6px 6px;
    border: 1px solid rgba(132, 157, 189, 0.5);
    padding: 0 40px;
    margin: 0 0 10px 0;
    position: relative;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #1E395B;
    line-height: 42px;
}

.textbook_cont_section:hover {
    background: #EBF2FC;
    border-radius: 6px 6px 6px 6px;
    border: 1px solid rgba(132, 157, 189, 0.5);
    color: #2E8AFF;
}

.textbook_cont_sectionclose {
    position: absolute;
    right: 10px;
    top: 10px;
    height: 20px;
    width: 20px;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    line-height: 20px;
    background: linear-gradient(180deg, #FDFEFF 0%, #E6EFFB 100%);
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #C1CEDE;
}

.textbook_cont_sectionclose:hover {
    background: #eee;
}

.textbook_left {
    float: left;
    width: 380px;
    height: 100%;
    box-sizing: border-box;
    border-right: 1px solid #CCCCCC;
}

.textbook_top {
    width: 100%;
    height: 50px;
    box-sizing: border-box;
    padding: 0 20px;
    line-height: 50px;
    box-sizing: border-box;
    border-bottom: 1px solid #CCCCCC;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 16px;
    color: #1E395B;
    position: relative;
    padding: 0 0 0 18px;
}

.textbook_top::before {
    content: ' ';
    position: absolute;
    left: 10px;
    top: 50%;
    height: 14px;
    width: 2px;
    margin: -7px 0 0 0;
    border-radius: 2px;
    background: #2E8AFF;
}

.textbook_right {
    float: left;
    width: calc(100% - 380px);
    height: 100%;
    box-sizing: border-box;
    padding: 0 20px;
}

.textbook_cont {
    width: 100%;
    height: calc(100% - 50px);
    box-sizing: border-box;
    padding: 0 20px;
}

.textbook_btn {
    float: right;
    margin: 6px 0 0 0;
}

.textbook_search {
    height: 50px;
    width: 100%;
    box-sizing: border-box;
    padding: 7px 20px;
}

.textbook_tree {
    width: 100%;
    height: calc(100% - 100px);
    overflow: hidden;
}

.textbook_treelist {
    border-top: 1px solid #CCCCCC;
    height: 100%;
    width: 100%;
    overflow-y: auto;
    box-sizing: border-box;
    padding: 0 15px;
}

.textbook_chapter {
    width: 100%;
    height: auto;
    min-height: 40px;
    margin: 0 0 5px 0;
    border-bottom: 1px solid #CCCCCC;
}

.textbook_chapterinfo {
    width: 100%;
    height: auto;
    min-height: 40px;
    box-sizing: border-box;
    line-height: 30px;
    padding: 5px 95px 5px 30px;
    position: relative;
}

.textbook_chapterinfo.teacher {
    padding: 5px 5px 5px 30px;
}

.textbook_chapterinfo:hover {
    background: #F0F2F5;
}

.textbook_chapterinfoall {
    padding: 5px 0 5px 30px;
}

.textbook_chapteropen {
    height: 30px;
    width: 30px;
    text-align: center;
    line-height: 30px;
    font-size: 18px;
    cursor: pointer;
    position: absolute;
    left: 0;
    top: 50%;
    margin: -15px 0 0 0;
}

.textbook_chapteropen img {
    height: 18px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.textbook_chaptericons {
    position: absolute;
    right: 0;
    top: 50%;
    margin: -15px 0 0 0;
    height: 30px;
    width: 90px;
}

.textbook_chaptericons.teacher {
    width: 30px;
}

.textbook_chaptericon {
    float: left;
    height: 30px;
    width: 30px;
    text-align: center;
    line-height: 30px;
    font-size: 18px;
    cursor: pointer;
}

.textbook_chaptericon:hover {
    color: #1482F0;
}

.textbook_sections {
    width: 100%;
    height: auto;
    min-height: 45px;
    box-sizing: border-box;
    padding: 5px 20px 0 30px;
    position: relative;
}

.textbook_sections:before {
    content: ' ';
    position: absolute;
    left: 29px;
    top: 50%;
    transform: translateY(-50%);
    height: calc(100% - 40px);
    background: #CCCCCC;
    width: 1px;
}

.textbook_sections1 {
    position: absolute;
    top: 25px;
    left: 29px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    border: 1px solid #CCCCCC;
    margin: -5px 0 0 -2px;
    background: #FFFFFF;
    z-index: 1;
}

.textbook_sections2 {
    position: absolute;
    bottom: 20px;
    left: 29px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    border: 1px solid #CCCCCC;
    margin: 3px 0 0 -2px;
    background: #FFFFFF;
}

.textbook_sectioninfo {
    width: 100%;
    height: auto;
    min-height: 40px;
    box-sizing: border-box;
    line-height: 40px;
    padding: 0 65px 0 15px;
    position: relative;
    font-size: 15px;
}

.textbook_sectioninfo.teacher {
    padding: 0 35px 0 15px;
}

.textbook_sectioninfo:hover {
    background: #F6F6F6;
}

.textbook_sectioninfo.active {
    background: #F0F2F5;
}

.textbook_sectioninfoall {
    padding: 0 0 0 15px;
}

.textbook_sectionicons {
    position: absolute;
    right: 0;
    top: 50%;
    margin: -15px 0 0 0;
    height: 30px;
    width: 60px;
}

.textbook_sectionicons.teacher {
    width: 30px;
}

.textbook_right {
    width: calc(100% - 380px);
    height: 100%;
    float: right;
}

.textbook_cont {
    width: 100%;
    height: calc(100% - 50px);
    overflow-y: auto;
    box-sizing: border-box;
    padding: 20px 0;
    position: relative;
}

.textbook_cont.ai {
    width: calc(100% - 300px);
    float: left;
}

.textbook_cont_ai {
    width: 300px;
    height: 100%;
    box-sizing: border-box;
    border-right: 1px solid #CCCCCC;
    float: left;
}

.textbook_cont_aimain {
    width: 100%;
    height: calc(100% - 50px);
    overflow-y: auto;
    box-sizing: border-box;
    padding: 15px;
}

.textbook_page {
    width: 100%;
    height: auto;
    position: relative;
}

.textbook_pagecont {
    width: 100%;
    box-sizing: border-box;
    padding: 0 20px;
    position: relative;
}

.textbook_pageitem {
    border: 1px solid #CCCCCC;
    padding: 15px;
}

.textbook_pageitem p,
.textbook_pageitem div {
    word-break: break-all;
}

.textbook_pageitem img {
    max-width: 100%;
}

.textbook_pageitem video {
    background: #000000;
}

.textbook_pageitem iframe {
    border: none;
    outline: none;
    margin: 0 auto;
    display: block;
}

.textbook_pagebtn {
    position: absolute;
    right: 0;
    bottom: 0;
    text-align: right;
    height: 36px;
    box-sizing: border-box;
    padding: 0 20px;
}

.textbook_pagenum {
    width: 100%;
    box-sizing: border-box;
    padding: 0 20px;
    text-align: center;
    height: 50px;
    line-height: 50px;
    margin: 0 0 20px 0;
}

.textbook_tree_item {
    width: 100%;
    box-sizing: border-box;
    padding: 0 80px 0 0;
    position: relative;
}

.textbook_tree_item.active {
    color: #409EFF;
}

.textbook_tree_itemuser {
    position: absolute;
    right: 10px;
    top: 0;
    color: #97a3b1;
    font-size: 14px;
}


.data_btns {
    height: 32px;
    margin: 0 0 10px;
    box-sizing: border-box;
    padding: 0 0 0 15px;
}

.data_btn {
    width: auto;
    height: 32px;
    background: #F4F5F7;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #E7E7E7;
    padding: 0 12px 0 8px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #202D40;
    line-height: 30px;
    cursor: pointer;
    float: left;

}

.data_btn:hover {
    color: #165DFF;
}

.data_btn.l {
    float: left;
    margin: 0 10px 0 0;
}

.data_btn.r {
    float: right;
    margin: 0 0 0 10px;
}

.data_btn.add {
    .arco-icon {
        color: #165DFF;
    }
}

.data_btn.add:hover {
    color: #165DFF;

}

.data_card_list {
    height: auto;
    margin: 0 10px 10px;
    background: #F9F9F9;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #E5E6EB;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #000000;
}

.chapter_text {
    box-sizing: border-box;
    padding: 0 75px 0 55px;
    position: relative;
}

.chapter_text_in {
    line-height: 46px;
    height: auto;
}

.chapter_text_allicon {
    position: absolute;
    left: 9px;
    top: 50%;
    transform: translateY(-50%);
    background: #DDEBFF;
    color: #2E8AFF;
    width: 16px;
    height: 16px;
    border-radius: 4px;
    text-align: center;
    line-height: 16px;
    font-size: 12px;
}

.section_text.active .chapter_text_allicon {
    background: #2e8aff;
    color: #FFFFFF;
}

.chapter_text_span {
    background: #FAA10F;
    color: #fff;
    height: 16px;
    width: 16px;
    line-height: 16px;
    font-size: 12px;
    color: #FFFFFF;
    border-radius: 4px;
    position: absolute;
    left: 30px;
    top: 50%;
    text-align: center;
    transform: translateY(-50%);
}

.chapter_text_in.active {
    color: rgb(var(--primary-6));
}

.section_text {
    box-sizing: border-box;
    padding: 0 50px 0 25px;
    position: relative;
    border: 1px solid transparent;
    margin: 0 0 5px 0;
}

.section_text.active {
    background: #DDEBFF;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #C1CEDE;
}

.section_text_all {
    background: #FFFFFF;
    border-radius: 4px 4px 4px 4px;
    width: calc(100% - 20px);
    margin: 0 auto 10px;
    padding: 5px;

}

.file_text {
    box-sizing: border-box;
    padding: 0 0 0 40px;
    position: relative;
}

.chapter_text_all {
    cursor: pointer;
    box-sizing: border-box;
    padding: 0 5px;
}

.section_text:hover .section_text_in {
    color: #2E8AFF;
}

.chapter_input_all {
    width: calc(100% - 20px);
    margin: 0 auto;
}

.arco_tree_btns {
    position: absolute;
    right: 0;
    height: 20px;
    top: 50%;
    color: #97A3B1;
    transform: translateY(-50%);
    width: auto;
    box-sizing: border-box;
    padding: 0 3px 0 0;
}

.arco_tree_btn {
    width: 20px;
    height: 20px;
    background: linear-gradient(180deg, #FDFEFF 0%, #E6EFFB 100%);
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #C1CEDE;
    text-align: center;
    line-height: 18px;
    font-size: 14px;
    cursor: pointer;
    color: #1E395B;
    float: left;
    margin: 0 5px 0 0;
}


.arco_tree_btn:hover {
    background: linear-gradient(180deg, #83A9D9 0%, #1E395B 100%);
    color: #FFFFFF;

}

.textbook_right_scroll {
    height: 100%;
    box-sizing: border-box;
    padding: 20px;
    overflow-y: auto;
}

.textbook_right_scroll.border {
    border: 1px solid #CCCCCC;
    border-top: none;
    padding: 0 20px;
}

.textbook_new_tree {
    width: 365px;
    height: calc(100% - 60px);
    box-sizing: border-box;
    background: #FFFFFF;
    border: 1px solid #849DBD;
    float: left;
}

.textbook_new_tree_head {
    width: 100%;
    height: 40px;
    background: linear-gradient(180deg, #FDFEFF 0%, #E6EFFB 100%);
    border-bottom: 1px solid #849DBD;
    box-sizing: border-box;
    padding: 0 12px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 16px;
    color: #1E395B;
    line-height: 38px;
}

.textbook_new_tree_head_right {
    width: 24px;
    height: 24px;
    background: linear-gradient(180deg, #87BCFE 0%, #1E395B 100%);
    border-radius: 4px 4px 4px 4px;
    border: 1px solid;
    float: right;
    margin: 8px 0 0 0;
    cursor: pointer;
    line-height: 23px;
    font-size: 14px;
    color: #FFFFFF;
    text-align: center;
}

.textbook_new_tree_head_right:hover {
    background: linear-gradient(180deg, #83A9D9 0%, #1E395B 100%);
}

.textbook_new_tree_body {
    width: 100%;
    height: calc(100% - 40px);
    box-sizing: border-box;
    padding: 13px 0 0 0;
}

.textbook_new_tree_body.back {
    background: #EBF2FC;
    box-sizing: border-box;
    padding: 14px;
}

.textbook_new_tree_body_search {
    width: 100%;
    height: 40px;
    box-sizing: border-box;
    padding: 0 12px;
}

.textbook_new_tree_body_list {
    height: calc(100% - 40px);
    width: 100%;
    box-sizing: border-box;
    padding: 0 12px;
    overflow-y: auto;
    position: relative;
}

.textbook_new_tree_body_empty {
    height: 100%;
    width: 100%;
    position: relative;

}

.textbook_new_tree_body_emptycont {
    height: auto;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 16px;
    color: #86909C;
    line-height: 16px;

}

.textbook_new_tree_body_emptycont img {
    display: block;
    margin: 0 auto;
}

.section_text_in {
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #1E395B;
    line-height: 33px;
}

.textbook_new_cont {
    width: calc(100% - 365px);
    height: calc(100% - 60px);
    box-sizing: border-box;
    background: #FFFFFF;
    border: 1px solid #849DBD;
    border-left: none;
    float: left;
    position: relative;
}

.textbook_btn_ai {
    height: 28px;
    background: linear-gradient(313deg, #A64DFF 0%, #168EFF 73%, #40EEFB 100%);
    border-radius: 4px 4px 4px 4px;
    float: right;
    margin: 6px 0 0;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 12px;
    color: #FFFFFF;
    padding: 0 10px;
    line-height: 28px;
    cursor: pointer;
}

.textbook_btn_ai.disabled {
    opacity: 0.7;
    cursor: not-allowed;
}


.textbook_btn_ai img {
    float: left;
    margin: 3px 3px 0 0;
}

.textbook_new_cont_body {
    width: 100%;
    height: calc(100% - 40px);
    overflow: hidden;
    position: relative;
}

.textbook_new_tree_body_back {
    position: absolute;
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.textbook_new_tree_body_back.edit {
    padding: 67px 25px 20px;
    z-index: 4;
}

.textbook_new_tree_body_backinfo {
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 24px;
    color: #000000;
    line-height: 24px;
}

.textbook_new_tree_body_backinfo span {
    color: #168EFF;
}

.textbook_new_tree_body_backinfo1 {
    width: 597px;
    height: 527px;
    position: relative;
    margin: 30px auto 0;
    box-sizing: border-box;
    padding: 30px 0 0;
}

.textbook_new_tree_body_backinfo2 {
    margin: 0 auto 22px;
    position: relative;
    z-index: 1;
}

.textbook_new_cont_body_cover {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);

}

.textbook_new_cont_body_coverin {
    position: absolute;
    left: 50%;
    top: 50%;
    height: 100px;
    transform: translate(-50%, -50%);
    z-index: 3;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 24px;
    color: #FFFFFF;
    line-height: 100px;
}

.textbook_new_cont_body_coverin img {
    float: left;
    margin: 0 10px 0 0;
    position: relative;
    top: 8px;
}

.momentum {
    float: left;
    position: relative;
    top: 30px;
    margin: 0 0 0 10px;
    --uib-size: 40px;
    --uib-speed: 1s;
    --uib-color: rgb(221, 255, 242);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: var(--uib-size);
    width: var(--uib-size);
    animation: rotate01561 var(--uib-speed) linear infinite;
}

.momentum::before,
.momentum::after {
    content: '';
    height: 25%;
    width: 25%;
    border-radius: 50%;
    background-color: var(--uib-color);
}

.momentum::before {
    animation: wobble290123 calc(var(--uib-speed) * 1.25) ease-in-out infinite;
}

.momentum::after {
    animation: wobble9123 calc(var(--uib-speed) * 1.25) ease-in-out infinite;
}

.momentum::before {
    margin-right: 10%;
}

@keyframes wobble9123 {

    0%,
    100% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(calc(var(--uib-size) * 0.2)) scale(1.1);
    }
}

@keyframes wobble290123 {

    0%,
    100% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(calc(var(--uib-size) * -0.2)) scale(1.1);
    }
}

@keyframes rotate01561 {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.textbook_new_tree_body_left {
    width: 520px;
    height: 100%;
    float: left;
    position: relative;
    box-sizing: border-box;
    padding: 67px 25px 62px;
    overflow: hidden;
}

.textbook_new_tree_body_left.edit {
    padding: 67px 25px 48px;
}

.textbook_new_tree_body_left.state1 {
    width: 100%;
}

.textbook_new_tree_body_left.state2 {
    width: 520px;
}

.textbook_new_tree_body_left.state3 {
    width: 0;
    padding: 0;
}

.textbook_new_tree_body_left1 {
    height: 67px;
    box-sizing: border-box;
    position: absolute;
    left: 25px;
    top: 0;
    padding: 21px 0 0 0;
}

.textbook_new_tree_body_left1 img {
    float: left;

}

.textbook_new_tree_body_left1 img.textbook_new_tree_body_left12 {
    margin: 5px 0 0 0;
}

.textbook_new_tree_body_left2 {
    height: 62px;
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

.textbook_new_tree_body_left3 {
    width: 107px;
    height: 40px;
    background: linear-gradient(313deg, #A64DFF 0%, #168EFF 73%, #40EEFB 100%);
    border-radius: 30px 30px 30px 30px;
    display: inline-block;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 18px;
    color: #FFFFFF;
    line-height: 40px;
    text-align: center;
    cursor: pointer;
}

.textbook_new_tree_body_left3.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.textbook_new_tree_body_left4 {
    height: 100%;
    width: 100%;
    position: relative;
    z-index: 1;

}

.textbook_new_tree_body_left5 {
    width: 100%;
    height: calc(50% - 15px);
    margin: 0 0 15px;
    background: linear-gradient(180deg, #CFD7FF 0%, #9DC8FF 100%);
    border-radius: 10px 10px 10px 10px;
    border: 1px solid #FFFFFF;
    box-sizing: border-box;
    padding: 16px;
}

.textbook_new_tree_body_left51 {
    height: 25px;

    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 18px;
    color: #000000;
    line-height: 25px;
    margin: 0 0 10px;
}

.textbook_new_tree_body_left51 img {
    float: left;
    margin: 0 10px 0 0;
}

.textbook_new_tree_body_left52 {
    width: 100%;
    height: calc(100% - 35px);
    background: #FFFFFF;
    border-radius: 10px 10px 10px 10px;
    box-sizing: border-box;
    padding: 10px;
    overflow: auto;
    resize: none;
    border: none;
    outline: none;
}

.textbook_new_tree_body_left6 {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 10px 10px 10px 10px;
    border: 1px solid #FFFFFF;
    position: relative;
    z-index: 1;
    box-sizing: border-box;
    padding: 15px;
    overflow-y: auto;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 16px;
    color: #000000;
    line-height: 25px;
    word-break: break-all;
}

.textbook_new_tree_body_left7 {
    height: 48px;
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 2;
    text-align: left;
    box-sizing: border-box;
    padding: 8px 25px 0;

}

.textbook_new_tree_body_btn {
    width: auto;
    height: 28px;
    background: linear-gradient(180deg, #FDFEFF 0%, #E6EFFB 100%);
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #C1CEDE;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #1E395B;
    line-height: 26px;
    padding: 0 6px;
    cursor: pointer;
    display: inline-block;
    margin: 0 10px 0 0;
}

.textbook_new_tree_body_btn:hover {
    background: linear-gradient(180deg, #83A9D9 0%, #1E395B 100%);
    color: #FFFFFF;
}

.textbook_new_tree_body_left8 {
    position: absolute;
    right: 14px;
    top: 24px;
    z-index: 1;
}

.textbook_new_tree_body_right {
    float: left;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
    padding: 20px 0;
    overflow-y: auto;
}

.textbook_new_tree_body_right.state1 {
    width: 0;
    box-sizing: border-box;
    border-left: 1px solid #849dbd;
}

.textbook_new_tree_body_right.state2 {
    width: calc(100% - 520px);
    box-sizing: border-box;
    border-left: 1px solid #849dbd;
}

.textbook_new_tree_body_right.state3 {
    width: 100%;
    box-sizing: border-box;
    border-left: 1px solid #849dbd;
}

.textbook_new_tree_body_right_btn {
    box-sizing: border-box;
    padding: 0 0 20px 20px;
}

.adedit_head {
    position: absolute;
    left: 0;
    top: 26px;
    width: 100%;
    text-align: center;
    z-index: 1;
}

.textbook_new_edit_ai {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

.textbook_new_teachers {
    height: calc(100% - 55px);
    width: 100%;
    overflow-y: auto;
    box-sizing: border-box;
    padding: 0 0 0 20px;
}

.textbook_new_teacher {
    float: left;
    height: 152px;
    background: #DFEAF9;
    border-radius: 10px 10px 10px 10px;
    border: 1px solid rgba(132, 157, 189, 0.5);
    margin: 0 24px 24px 0;
    width: calc(25% - 24px);
    box-sizing: border-box;
}

.textbook_new_teacher:hover,
.textbook_new_teacher.active {
    background: #DFEAF9;
    box-shadow: 4px 4px 16px 0px rgba(13, 90, 189, 0.4);
    border-radius: 10px 10px 10px 10px;
    border: 1px solid #2E8AFF;
}

.textbook_new_teacher1 {
    height: 100px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F9FF 100%);
    border-radius: 10px 10px 0px 0px;
    box-sizing: border-box;
    padding: 20px 20px 0;
}

.textbook_new_teacher2 {
    float: left;
    height: 60px;
    width: 60px;
    margin: 0 15px 0 0;
    border-radius: 5px;
    overflow: hidden;
    background: #C2D5E9;
    position: relative;
}

.textbook_new_teacher2 img {
    max-width: 100%;
    max-height: 100%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.textbook_new_teacher3 {
    float: left;
    width: calc(100% - 75px);
    height: auto;
    margin: 10px 0 0 0;
}

.textbook_new_teacher31 {
    height: 16px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 16px;
    color: #000000;
    line-height: 16px;
    margin: 0 0 15px;

}

.textbook_new_teacher32 {
    height: 16px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #87929F;
    line-height: 16px;
}

.textbook_new_teacher4 {
    height: 50px;
    box-sizing: border-box;
    padding: 0 0 0 20px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 12px;
    color: #87929F;
    line-height: 50px;
}

.textbook_new_teacher4 span {
    font-family: PingFang SC, PingFang SC;
    font-weight: bold;
    font-size: 16px;
    color: #1E395B;
}

.textbook_new_teacher_share {
    width: 60%;
    height: 90%;
    border-radius: 10px;
    background: #FFFFFF;
    position: absolute;
    left: 20%;
    top: 4%;
    box-sizing: border-box;
    padding: 30px 30px 75px;
}

.textbook_new_teacher_share.active {
    width: 50%;
    left: 25%;
}

.textbook_new_teacher_share_close {
    width: 30px;
    height: 30px;
    background: linear-gradient(180deg, #FDFEFF 0%, #E6EFFB 100%);
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #C1CEDE;
    text-align: center;
    line-height: 30px;
    position: absolute;
    right: -50px;
    top: 0;
    cursor: pointer;
    font-size: 20px;
}

.textbook_new_teacher_share_close:hover {
    background: linear-gradient(180deg, #83A9D9 0%, #1E395B 100%);
    color: #FFFFFF;
}

.textbook_new_teacher_share_btns {
    width: 100%;
    height: 75px;
    position: absolute;
    left: 0;
    bottom: 0;
    text-align: center;
    box-sizing: border-box;
    padding: 20px 0 0 0;
}

.textbook_new_teacher_main {
    width: 100%;
    height: 100%;
}

.textbook_new_teacher_mainitem {
    height: 100%;
    width: 33.3%;
    float: left;
    border: 1px solid #849dbd;
    border-left: none;

}

.textbook_new_teacher_mainitem.active {
    width: 50%;
}

.textbook_new_teacher_mainitem:first-child {
    border-left: 1px solid #849dbd;
}

.textbook_new_teacher_list_head {
    width: 100%;
    height: 34px;
    background: #EBF2FC;
    border-radius: 4px 4px 4px 4px;
    margin: 0 0 6px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #87929F;
    line-height: 34px;
}

.textbook_new_teacher_list_td1 {
    width: 75px;
    float: left;
    text-align: center;
}

.textbook_new_teacher_list_td2 {
    width: calc(100% - 220px);
    float: left;
    text-align: center;

}

.textbook_new_teacher_list_td3 {
    width: 145px;
    float: left;
    text-align: center;
}

.textbook_new_teacher_list_tr {
    width: 100%;
    height: 34px;
    background: #F9F9F9;
    border-radius: 4px 4px 4px 4px;
    margin: 0 0 6px;
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #333333;
    line-height: 34px;
    cursor: pointer;
}

.textbook_new_teacher_list_tr:hover {
    background: #EBF2FC;
}

.textbook_new_teacher_list_tr.active {
    background: #2E8AFF;
    color: #FFFFFF;
}

.textbook_new_teacher_list_icon {
    height: 26px;
    width: 26px;
    border-radius: 4px 4px 4px 4px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: #c2d5e9;
    margin: 0 auto;
    top: 4px;

}

.textbook_new_teacher_list_icon img {
    max-width: 100%;
    max-height: 100%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.textbook_new_tree_body_list .el-tree>.el-tree-node {
    background: #F9F9F9;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #E5E6EB;
    margin: 0 0 6px;
    padding: 5px 0 10px;
}

.textbook_new_tree_body_list .el-tree>.el-tree-node>.el-tree-node__children {
    background: #FFFFFF;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid rgba(132, 157, 189, 0.3);
    padding: 6px 0 0;
    margin: 0 0 0 10px;
}

.textbook_new_tree_body_list .el-tree-node {
    font-family: PingFang SC, PingFang SC;
    font-weight: 500;
    font-size: 14px;
    color: #1E395B;
    padding-top: 3px;
    padding-bottom: 3px;
}

.textbook_new_tree_body_list .el-tree-node:hover,
.textbook_new_tree_body_list .el-tree-node.is-checked {
    color: #2E8AFF;

}